1.4 Relationship to Other Protocols

A NetBIOS
name might or might not be derived from an Internet host name. The
syntax for an Internet host name is much more constrained than the syntax for
an arbitrary NetBIOS name. Therefore, it is possible to derive a NetBIOS name
from a given Internet host name, but not necessarily vice versa.

The NetBIOS name service is used to resolve names within a
local subnet, and is also used to resolve names within a larger network using
an NBNS. However, it is
only defined for IPv4. As such, its use for name resolution has largely been
superseded by newer protocols, such as the Link-Local Multicast Name Resolution
(LLMNR) Protocol [RFC4795]
and the Domain Name System (DNS) [RFC1035].